20 Covert Channel 200602824
1 4 2 6 2.1 Covert Channel..................... 6 2.1.1................. 6 2.1.2 Covert Channel........ 7 2.2...................... 7 2.3.................... 8 2.4.................. 9 2.5...................... 9 2.6...................... 10 2.6.1.................. 10 2.6.2..................... 11 2.6.3.................. 11 2.7................. 12 2.8 RDF........................... 13 2.9...................... 16 2.9.1............. 16 2.9.2............ 16 2.9.3 protege...................... 17 3 18 3.1 Covert Channel............ 18 3.2 Covert Channel................. 19 3.3 Covert Channel............... 20 1
2 4 27 5 28 6 1
2.1 Covert Channel( )........... 7 2.2...................... 10 2.3 RDF................... 13 2.4 RDF...................... 14 2.5 RDF XML............. 14 3.1 Covert Channel............ 18 3.2 Covert Channel.... 19 3.3 HTML.......... 21 3.4 chasen.......... 22 3.5 RDF...................... 24 3.6 protege................... 25 3.7 Covert Channel................. 26 3
1 [8][9],,,.,,. Covert Channel[8][9] Covert Channel ACL[8][9](Access Control List) Covert Channel Covert Channel ACL Covert Channel, [2] [1][10] ACL,, DB [5] RDF[3][6] ACL 4
5,Covert Channel,,RDF, Covert Channel
2 2.1 Covert Channel 2.1.1 Covert Channel [7][8][9], Subject,Object, permission, 3.,Covert Channel,. 2.1, S=Subject, O=Object,R=,W= 2.1, Subject1 Object1. Covert Channel.. Subject2 Object1 Subject2 Object1 Subject2 Object2 Subject2 Object2 Object1 Subject1 Object2 Subject1 Object2. Object1 Subject1 Covert Channel Object1,,. 6
7 2.1: Covert Channel( ) 2.1.2 Covert Channel Covert Channel, (Covert Channel),,,. Covert Channel.. 1 PC.mixi SNS 2, PC,. WWW. Covert Channel. 2.2 Covert Channel, Subject Subject. Subject
8,Covert Channel, Subject k k. k 2 k 2. 2, k, Covert Channel. 2.3 Subject,Object,permission. Subject Covert Channel Object. Object Covert Channel,. Subject Object. permission, READ WRITE EXE 3 permission,. permission read write read write 4. Covert Channel.
9 2.4,,..,permission(read,write, read, write),subject,object,.,,. 2.5 Covert Channel Covert Channel 4 3 Read Covert Channel Covert Channel 2.2 (1)(2)(3)(4) Covert Channel (1) (S1,O1) READ (2) (S1,O2) WRITE (3) (S2,O1) READ (4) (S2,O2) READ (1) (4) Covert Channel
10 2.2: 2.6 2.6.1 [2]. Yahoo! Japan.
11 URL Google.,,. Google,, 2.6.2 Web Web HEML 2.6.3 HTML HTML
12 HTML ( ) ( ) HTML URL URL ( ) HTML URL 2.7 [4][5],,.,..,., She likes a cake or something like that She/ like/ a/ cake/ Or/ something/ like/ that/./., /. SHE lile a cake something llike that,likes. WWW, Web.,,.,,
13,,.,,,,.,..,..,,. 2.8 RDF RDF[3][6],,, 3. RDF.. http://www.kubo.com,rdf, 2.3: RDF RDF,.
14 2.4: RDF RDF,,,.,. RDF,,URI URI., URI,,,dc:creator URI.,,URI,.,,URI.,RDF,, URI. 2.5: RDF XML
15,rdf:description,rdf about URI, dc:creator rdf: RDF Model and Syntax.
16 2.9 2.9.1 Ontology[1][10],,, 2.9.2,., is-a part-of attribute-of instanceof,. is-a is-a -. is-a., ( ),...,. part-of part-of, -.,. (class) part-of
17, class instance - ( ).. (is-a)part-of. instance -. instance instance.part-of,. attribute-of attribute-of,,,. (is-an)attribute-of (which is-a)part-of. instance-of instance-of, (instance)., instance instance-of.instance-of x instance,x instance., instance is-a instance. 2.9.3 protege Protege 10 (2008 7 ) protege
3 3.1 Covert Channel Covert Channel object. 1,object subject object.r read W write. Subject3 Object1. ACL S3 O1. O1 S2 O8 Sothers.S 08 S3 O1. 3.1: Covert Channel 18
19 3.2 Covert Channel ACL Covert Channel ACL 3.2: Covert Channel
20 3.3 Covert Channel Covert Channel..,,. HTML kogane 02/01 090-4216-0000 kogane kogane kogane kogane - - - - 02/01 02/01 02/01 02/01 - - - - - - - - - - - - - - -
21 - - 090-4216-0000 090-4216-0000 090-4216-0000 090-4216-0000. 3.3: HTML
22 3.4: chasen Hadoop Hadoop Google Map Reduce 2 Hadoop 2 Mastar Worker Map Worker( ) Map Map Map
23 Map key/value Reduce Map Reduce Map Reduce
24, RDF.,RDF RDF. 090-4216-0000, ( ) ( )090-4216-0000 ( ). 3.5: RDF
25 DB. 090-4216-0000instance-of is-a is-a. DB protege. 3.6: protege ACL RDF DB ACL ACL.
26 Covert Channel, ACL Web ACL. Covert Channel S1 S2 S2 S1 S1.. 3.7: Covert Channel
4 CovertChannel ACL CovertChannel ACL, Covert Channel, Hadoop RDF RDF DB ACL,ACL 27
5 28
[1],,, (2006) [2] : Ruby (2009) [3] RDF/OWL (2005) [4] ChaSen s Wiki,http://chasen.naist.jp/hiki/ChaSen/ [5] /,http://chasen.naise.jp/chaki/t/2006-09- 05/slides/enshu-slides-4up.pdf [6] HTML/XHTML,http://www.kanzaki.com/book/shx/ [7] (2009) [8] : Covert Channel 2006. [9] : Covert Channel 2007 [10] : Ontology 2006 29
6 Q1 Q2 ACL 1